Noco genius G26000

[Laggard]

Charged up a tractor battery with it and working ok yesterday. Got it out to charge a battery today and doesn’t work. Changed plug fuse but still doesn’t switch on. Anything else i can try please?

 

[Oscar]

No help really but I had one do the same within a year old . Got replaced with a new one but they wanted a picture of old one with cable cut off ie they did not bother with me sending it back for repair or a look see .